First prototype
diff --git a/inc/Gtfs/Frequency.php b/inc/Gtfs/Frequency.php
new file mode 100644
index 0000000..6d53d50
--- /dev/null
+++ b/inc/Gtfs/Frequency.php
@@ -0,0 +1,208 @@
+<?php
+# Generated by the protocol buffer compiler. DO NOT EDIT!
+# source: proto/gtfs.proto
+
+namespace Gtfs;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * Generated from protobuf message <code>gtfs.Frequency</code>
+ */
+class Frequency extends \Google\Protobuf\Internal\Message
+{
+ /**
+ * Generated from protobuf field <code>string trip_id = 1;</code>
+ */
+ protected $trip_id = '';
+ /**
+ * Generated from protobuf field <code>string start_time = 2;</code>
+ */
+ protected $start_time = '';
+ /**
+ * Generated from protobuf field <code>string end_time = 3;</code>
+ */
+ protected $end_time = '';
+ /**
+ * Generated from protobuf field <code>int32 headway_secs = 4;</code>
+ */
+ protected $headway_secs = 0;
+ /**
+ * Generated from protobuf field <code>.gtfs.Frequency.ScheduleType exact_times = 5;</code>
+ */
+ protected $exact_times = 0;
+ /**
+ * The extensions namespace allows 3rd-party developers to extend the
+ * GTFS specification in order to add and evaluate new features and
+ * modifications to the spec.
+ *
+ * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+ */
+ protected $extension = null;
+
+ /**
+ * Constructor.
+ *
+ * @param array $data {
+ * Optional. Data for populating the Message object.
+ *
+ * @type string $trip_id
+ * @type string $start_time
+ * @type string $end_time
+ * @type int $headway_secs
+ * @type int $exact_times
+ * @type \Google\Protobuf\Any $extension
+ * The extensions namespace allows 3rd-party developers to extend the
+ * GTFS specification in order to add and evaluate new features and
+ * modifications to the spec.
+ * }
+ */
+ public function __construct($data = NULL) {
+ \GPBMetadata\Proto\Gtfs::initOnce();
+ parent::__construct($data);
+ }
+
+ /**
+ * Generated from protobuf field <code>string trip_id = 1;</code>
+ * @return string
+ */
+ public function getTripId()
+ {
+ return $this->trip_id;
+ }
+
+ /**
+ * Generated from protobuf field <code>string trip_id = 1;</code>
+ * @param string $var
+ * @return $this
+ */
+ public function setTripId($var)
+ {
+ GPBUtil::checkString($var, True);
+ $this->trip_id = $var;
+
+ return $this;
+ }
+
+ /**
+ * Generated from protobuf field <code>string start_time = 2;</code>
+ * @return string
+ */
+ public function getStartTime()
+ {
+ return $this->start_time;
+ }
+
+ /**
+ * Generated from protobuf field <code>string start_time = 2;</code>
+ * @param string $var
+ * @return $this
+ */
+ public function setStartTime($var)
+ {
+ GPBUtil::checkString($var, True);
+ $this->start_time = $var;
+
+ return $this;
+ }
+
+ /**
+ * Generated from protobuf field <code>string end_time = 3;</code>
+ * @return string
+ */
+ public function getEndTime()
+ {
+ return $this->end_time;
+ }
+
+ /**
+ * Generated from protobuf field <code>string end_time = 3;</code>
+ * @param string $var
+ * @return $this
+ */
+ public function setEndTime($var)
+ {
+ GPBUtil::checkString($var, True);
+ $this->end_time = $var;
+
+ return $this;
+ }
+
+ /**
+ * Generated from protobuf field <code>int32 headway_secs = 4;</code>
+ * @return int
+ */
+ public function getHeadwaySecs()
+ {
+ return $this->headway_secs;
+ }
+
+ /**
+ * Generated from protobuf field <code>int32 headway_secs = 4;</code>
+ * @param int $var
+ * @return $this
+ */
+ public function setHeadwaySecs($var)
+ {
+ GPBUtil::checkInt32($var);
+ $this->headway_secs = $var;
+
+ return $this;
+ }
+
+ /**
+ * Generated from protobuf field <code>.gtfs.Frequency.ScheduleType exact_times = 5;</code>
+ * @return int
+ */
+ public function getExactTimes()
+ {
+ return $this->exact_times;
+ }
+
+ /**
+ * Generated from protobuf field <code>.gtfs.Frequency.ScheduleType exact_times = 5;</code>
+ * @param int $var
+ * @return $this
+ */
+ public function setExactTimes($var)
+ {
+ GPBUtil::checkEnum($var, \Gtfs\Frequency_ScheduleType::class);
+ $this->exact_times = $var;
+
+ return $this;
+ }
+
+ /**
+ * The extensions namespace allows 3rd-party developers to extend the
+ * GTFS specification in order to add and evaluate new features and
+ * modifications to the spec.
+ *
+ * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+ * @return \Google\Protobuf\Any
+ */
+ public function getExtension()
+ {
+ return $this->extension;
+ }
+
+ /**
+ * The extensions namespace allows 3rd-party developers to extend the
+ * GTFS specification in order to add and evaluate new features and
+ * modifications to the spec.
+ *
+ * Generated from protobuf field <code>.google.protobuf.Any extension = 2000;</code>
+ * @param \Google\Protobuf\Any $var
+ * @return $this
+ */
+ public function setExtension($var)
+ {
+ GPBUtil::checkMessage($var, \Google\Protobuf\Any::class);
+ $this->extension = $var;
+
+ return $this;
+ }
+
+}
+